I’m going to be doing some work in the future where I’ll have to combine live action with computer graphics. So I’m obviously going to need a motion tracker in order for anything to look good.
I know the two most popular ones are Voodoo and Icarus, but I don’t think I could use these. Voodoo isn’t Mac compatible, and Icarus is a little old (does it run natively on Intel Macs?) and can’t be used for commercial use.
Are you asking about free software? If so those are the only free camera trackers out there that I’m aware of… There was however one in development for integration with blender, but I think development has stalled for the moment.